Christine Custer
Christine Custer
Science and Products
Filter Total Items: 88
Reproductive success and contaminant associations in tree swallows (Tachycineta bicolor) used to assess a Beneficial Use Impairment in U.S. and Binational Great Lakes’ Areas of Concern
During 2010-2014, tree swallow (Tachycineta bicolor) reproductive success was monitored at 68 sites across all 5 Great Lakes, including 58 sites located within Great Lakes Areas of Concern (AOCs) and 10 non-AOCs. Sample eggs were collected from tree swallow clutches and analyzed for contaminants including polychlorinated biphenyls (PCBs), dioxins and furans, polybrominated diphenyl ethers, and 34
Authors
Christine M. Custer, Thomas W. Custer, Matthew A. Etterson, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Annual variation in polychlorinated biphenyl (PCB) exposure in tree swallow (Tachycineta bicolor) eggs and nestlings at Great Lakes Restoration Initiative (GLRI) study sites
Tree swallow (Tachycineta bicolor) eggs and nestlings were collected from 16 sites across the Great Lakes to quantify normal annual variation in total polychlorinated biphenyl (PCB) exposure and to validate the sample size choice in earlier work. A sample size of five eggs or five nestlings per site was adequate to quantify exposure to PCBs in tree swallows given the current exposure levels and va
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Synthesis of tree swallow (Tachycineta bicolor) data for Beneficial Use Impairment (BUI) assessment at Wisconsin Areas of Concern
Assessment of the “Bird or Animal Deformities or Reproductive Problems” Beneficial Use Impairment (BUI) can be accomplished by (1) comparing tissue concentrations to established background and Lowest Observable Effect Level (LOEL) for reproductive effects, or (2) directly measuring reproductive success at Areas of Concern (AOCs) and statistically comparing those rates to minimally impacted referen
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer
EROD activity, chromosomal damage, and oxidative stress in response to contaminants exposure in tree swallow (Tachycineta bicolor) nestlings from Great Lakes Areas of Concern
Tree swallow, Tachycineta bicolor, nestlings were collected from 60 sites in the Great Lakes, which included multiple sites within 27 Areas of Concern (AOCs) and six sites not listed as AOCs from 2010 to 2014. Nestlings, approximately 12 days-of-age, were evaluated for ethoxyresorufin-O-dealkylase (EROD) activity, chromosomal damage, and six measures of oxidative stress. Data on each of these biom
Authors
Thomas W. Custer, Christine M. Custer, Paul Dummer, Emilie Bigorgne, Elias Oziolor, Natalie K. Karouna-Renier, Sandra L. Schultz, Richard A. Erickson, Kevin Aagaard, Cole W. Matson
Organic contamination in tree swallow (Tachycineta bicolor) nestlings at United States and binational great Lakes Areas of Concern
Contaminant exposure of tree swallows, Tachycineta bicolor, nesting in 27 Areas of Concern (AOCs) in the Great Lakes basin was assessed from 2010 to 2014 to assist managers and regulators in their assessments of Great Lakes AOCs. Contaminant concentrations in nestlings from AOCs were compared with those in nestlings from nearby non-AOC sites. Polychlorinated biphenyl (PCB) and polybrominated diphe
Authors
Thomas W. Custer, Christine M. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson, Richard A. Erickson
Concentrations and spatial patterns of organic contaminants in tree swallow (Tachycineta bicolor) eggs at United States and binational Great Lakes Areas of Concern, 2010–2015
Tree swallows, Tachycineta bicolor, were sampled across the Great Lakes basin in 2010 through 2015 to provide a system-wide assessment of current exposure to organic contaminants. The results provide information identified as critical by regulators to assess the “bird or animal deformity or reproductive problems” beneficial use impairment. Eggs were collected from 69 sites across all 5 Great Lakes
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Chromosomal damage and EROD induction in tree swallows (Tachycineta bicolor) along the Upper Mississippi River, Minnesota, USA
The health of tree swallows, Tachycineta bicolor, on the Upper Mississippi River (UMR) was assessed in 2010 and 2011 using biomarkers at six sites downriver of Minneapolis/St. Paul, MN metropolitan area, a tributary into the UMR, and a nearby lake. Chromosomal damage was evaluated in nestling blood by measuring the coefficient of variation of DNA content (DNA CV) using flow cytometry. Cytochrome P
Authors
Emilie Bigorgne, Thomas W. Custer, Paul Dummer, Richard A. Erickson, Natalie K. Karouna-Renier, Sandra L. Schultz, Christine M. Custer, Wayne E. Thogmartin, Cole W. Matson
Lesser Scaup
No abstract available.
Authors
Michael J. Anteau, Jean-Michel DeVink, David N. Koons, Jane E. Austin, Christine M. Custer, Alan D. Afton
Incubation stage and polychlorinated biphenyl (PCB) congener patterns in an altricial and precocial bird species
The composition of polychlorinated biphenyl (PCB) congeners was compared between non-incubated and embryonated eggs of tree swallows (Tachycineta bicolor) and little terns (Sterna albifrons) to determine if measurable changes in PCB congeners occurred during the embryonic period. There was no indication of changes in PCB congener patterns over the incubation period in tree swallows in 1999 and 200
Authors
Christine M. Custer, Thomas W. Custer, Stefan Thyen, Peter H. Becker
Contaminant exposure of birds nesting in Green Bay, Wisconsin, USA
In earlier studies, elevated concentrations of polychlorinated biphenyl (PCB) and p,p'-dichlorodiphenyldichloroethylene (DDE) were reported in double-crested cormorant (Phalacrocorax auritus) eggs and tree swallow (Tachycineta bicolor) eggs and nestlings collected from lower Green Bay (WI, USA) in 1994 and 1995 and black-crowned night-heron (Nycticorax nycticorax) eggs collected in 1991. Comparabl
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, J. Christian Franson, Michael Jones
Changes in polychlorinated biphenyl (PCB) exposure in tree swallows (Tachycineta bicolor) nesting along the Sheboygan River, WI, USA
Exposure to polychlorinated biphenyls (PCBs) in tree swallow (Tachycineta bicolor) eggs on the Sheboygan River, Wisconsin in the 1990s was higher at sites downstream (geometric means = 3.33–8.69 μg/g wet wt.) of the putative PCB source in Sheboygan Falls, Wisconsin than it was above the source (1.24 μg/g) with the exposure declining as the distance downstream of the source increased. A similar pat
Authors
Christine M. Custer, Thomas W. Custer, Sean M. Strom, Kathleen A. Patnode, J. Christian Franson
Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River
n 2008 and 2009, dredge material from the Mississippi River in Pool 8 south of Brownsville, Minnesota was used to construct nearby islands. Chemical analysis of sediment in 2001 and 2002 in the area to be dredged indicated detectable concentrations of organic and inorganic contaminants. Tree swallows (Tachycineta bicolor), whose diet is mainly aquatic invertebrates, were used to evaluate contamina
Authors
Thomas W. Custer, Paul Dummer, Christine M. Custer, David Warburton
Science and Products
Filter Total Items: 88
Reproductive success and contaminant associations in tree swallows (Tachycineta bicolor) used to assess a Beneficial Use Impairment in U.S. and Binational Great Lakes’ Areas of Concern
During 2010-2014, tree swallow (Tachycineta bicolor) reproductive success was monitored at 68 sites across all 5 Great Lakes, including 58 sites located within Great Lakes Areas of Concern (AOCs) and 10 non-AOCs. Sample eggs were collected from tree swallow clutches and analyzed for contaminants including polychlorinated biphenyls (PCBs), dioxins and furans, polybrominated diphenyl ethers, and 34
Authors
Christine M. Custer, Thomas W. Custer, Matthew A. Etterson, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Annual variation in polychlorinated biphenyl (PCB) exposure in tree swallow (Tachycineta bicolor) eggs and nestlings at Great Lakes Restoration Initiative (GLRI) study sites
Tree swallow (Tachycineta bicolor) eggs and nestlings were collected from 16 sites across the Great Lakes to quantify normal annual variation in total polychlorinated biphenyl (PCB) exposure and to validate the sample size choice in earlier work. A sample size of five eggs or five nestlings per site was adequate to quantify exposure to PCBs in tree swallows given the current exposure levels and va
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Synthesis of tree swallow (Tachycineta bicolor) data for Beneficial Use Impairment (BUI) assessment at Wisconsin Areas of Concern
Assessment of the “Bird or Animal Deformities or Reproductive Problems” Beneficial Use Impairment (BUI) can be accomplished by (1) comparing tissue concentrations to established background and Lowest Observable Effect Level (LOEL) for reproductive effects, or (2) directly measuring reproductive success at Areas of Concern (AOCs) and statistically comparing those rates to minimally impacted referen
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer
EROD activity, chromosomal damage, and oxidative stress in response to contaminants exposure in tree swallow (Tachycineta bicolor) nestlings from Great Lakes Areas of Concern
Tree swallow, Tachycineta bicolor, nestlings were collected from 60 sites in the Great Lakes, which included multiple sites within 27 Areas of Concern (AOCs) and six sites not listed as AOCs from 2010 to 2014. Nestlings, approximately 12 days-of-age, were evaluated for ethoxyresorufin-O-dealkylase (EROD) activity, chromosomal damage, and six measures of oxidative stress. Data on each of these biom
Authors
Thomas W. Custer, Christine M. Custer, Paul Dummer, Emilie Bigorgne, Elias Oziolor, Natalie K. Karouna-Renier, Sandra L. Schultz, Richard A. Erickson, Kevin Aagaard, Cole W. Matson
Organic contamination in tree swallow (Tachycineta bicolor) nestlings at United States and binational great Lakes Areas of Concern
Contaminant exposure of tree swallows, Tachycineta bicolor, nesting in 27 Areas of Concern (AOCs) in the Great Lakes basin was assessed from 2010 to 2014 to assist managers and regulators in their assessments of Great Lakes AOCs. Contaminant concentrations in nestlings from AOCs were compared with those in nestlings from nearby non-AOC sites. Polychlorinated biphenyl (PCB) and polybrominated diphe
Authors
Thomas W. Custer, Christine M. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson, Richard A. Erickson
Concentrations and spatial patterns of organic contaminants in tree swallow (Tachycineta bicolor) eggs at United States and binational Great Lakes Areas of Concern, 2010–2015
Tree swallows, Tachycineta bicolor, were sampled across the Great Lakes basin in 2010 through 2015 to provide a system-wide assessment of current exposure to organic contaminants. The results provide information identified as critical by regulators to assess the “bird or animal deformity or reproductive problems” beneficial use impairment. Eggs were collected from 69 sites across all 5 Great Lakes
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Chromosomal damage and EROD induction in tree swallows (Tachycineta bicolor) along the Upper Mississippi River, Minnesota, USA
The health of tree swallows, Tachycineta bicolor, on the Upper Mississippi River (UMR) was assessed in 2010 and 2011 using biomarkers at six sites downriver of Minneapolis/St. Paul, MN metropolitan area, a tributary into the UMR, and a nearby lake. Chromosomal damage was evaluated in nestling blood by measuring the coefficient of variation of DNA content (DNA CV) using flow cytometry. Cytochrome P
Authors
Emilie Bigorgne, Thomas W. Custer, Paul Dummer, Richard A. Erickson, Natalie K. Karouna-Renier, Sandra L. Schultz, Christine M. Custer, Wayne E. Thogmartin, Cole W. Matson
Lesser Scaup
No abstract available.
Authors
Michael J. Anteau, Jean-Michel DeVink, David N. Koons, Jane E. Austin, Christine M. Custer, Alan D. Afton
Incubation stage and polychlorinated biphenyl (PCB) congener patterns in an altricial and precocial bird species
The composition of polychlorinated biphenyl (PCB) congeners was compared between non-incubated and embryonated eggs of tree swallows (Tachycineta bicolor) and little terns (Sterna albifrons) to determine if measurable changes in PCB congeners occurred during the embryonic period. There was no indication of changes in PCB congener patterns over the incubation period in tree swallows in 1999 and 200
Authors
Christine M. Custer, Thomas W. Custer, Stefan Thyen, Peter H. Becker
Contaminant exposure of birds nesting in Green Bay, Wisconsin, USA
In earlier studies, elevated concentrations of polychlorinated biphenyl (PCB) and p,p'-dichlorodiphenyldichloroethylene (DDE) were reported in double-crested cormorant (Phalacrocorax auritus) eggs and tree swallow (Tachycineta bicolor) eggs and nestlings collected from lower Green Bay (WI, USA) in 1994 and 1995 and black-crowned night-heron (Nycticorax nycticorax) eggs collected in 1991. Comparabl
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, J. Christian Franson, Michael Jones
Changes in polychlorinated biphenyl (PCB) exposure in tree swallows (Tachycineta bicolor) nesting along the Sheboygan River, WI, USA
Exposure to polychlorinated biphenyls (PCBs) in tree swallow (Tachycineta bicolor) eggs on the Sheboygan River, Wisconsin in the 1990s was higher at sites downstream (geometric means = 3.33–8.69 μg/g wet wt.) of the putative PCB source in Sheboygan Falls, Wisconsin than it was above the source (1.24 μg/g) with the exposure declining as the distance downstream of the source increased. A similar pat
Authors
Christine M. Custer, Thomas W. Custer, Sean M. Strom, Kathleen A. Patnode, J. Christian Franson
Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River
n 2008 and 2009, dredge material from the Mississippi River in Pool 8 south of Brownsville, Minnesota was used to construct nearby islands. Chemical analysis of sediment in 2001 and 2002 in the area to be dredged indicated detectable concentrations of organic and inorganic contaminants. Tree swallows (Tachycineta bicolor), whose diet is mainly aquatic invertebrates, were used to evaluate contamina
Authors
Thomas W. Custer, Paul Dummer, Christine M. Custer, David Warburton